planks -5646 beam , {planks} ,   

planks -6086 carpenters , gallows , helve , morter , {planks} , 
staff , stalks , stick , sticks , stock , stocks , timber , tree 
, trees , wood ,   

planks -6763 beams , boards , chamber , chambers , corners , 
leaves , {planks} , rib , ribs , side , sides ,